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Which reactions shows a physical change?
Burning coal is a chemical reaction, a chemical change; but the solid reactant is transformed in gaseous products (H2O and CO2) - this is a physical change.
Is reactions a chemical or physical?
Reactions can be both chemical and physical. Chemical reactions involve breaking and forming chemical bonds leading to the formation of new substances. Physical reactions involve changes in state, shape, or form of a substance without changing its chemical composition.
Is the eye color physical or chemical change?
Eye color is a physical change, not a chemical change. Eye color is determined by the amount and distribution of melanin in the iris, which is a physical characteristic that can change over time but does not involve any chemical reactions.
What is building a tower of magnetic blocks Physical or chemical change?
Building a tower of magnetic blocks is a physical change because the blocks are simply being rearranged without any chemical reactions taking place. The properties of the blocks themselves remain the same.
Is mixing ink in water chemical change or physical change?
Mixing ink in water is a physical change because no new substances are formed in the process. The ink particles simply disperse in the water without undergoing any chemical reactions.
Which reactions shows a physical change?
Burning coal is a chemical reaction, a chemical change; but the solid reactant is transformed in gaseous products (H2O and CO2) - this is a physical change.
Is Making orange slices a Physical change or chemical change?
Chemical reactions
Can a physical change become a chemical change?
A lot of chemical reactions are initiated by physical changes - specifically, heating something.
Is bleaching a sheet and pillowcase a chemical change or physical change?
These are chemical reactions (changes).
What is chemical and physical reactions?
A physical reaction is were the current substance can be changed in state and then changed back easily to it's previous state, a chemical reaction is the opposite, it is difficult to change it back to its previous state.
Does smell change with a physical change?
Smell is a physical property. It it caused by small amounts of the airborne substance undergoing chemical reactions with receptors in your nose.The smell of perfume is a physical not a chemical
Is pasteurization chemical or physical change?
Pasteurization involve chemical reactions.
Is sleeping a chemical or physical change and why?
Sleeping involve some chemical reactions and physical phenomenons but I suppose that it is exaggerate to consider sleep as a chemical/physical change.
What is the total of chemical and physical reactions?
Chemical reactions involve a change in chemical composition, while physical reactions involve a change in state or appearance without changing the chemical composition. Together, they encompass the various transformations that can occur in matter.
Is reactions a chemical or physical?
Reactions can be both chemical and physical. Chemical reactions involve breaking and forming chemical bonds leading to the formation of new substances. Physical reactions involve changes in state, shape, or form of a substance without changing its chemical composition.
How else are nuclear reactions unlike chemical reactions?
In nuclear reactions the atom itself changes while molecules and/or structural organisation of atoms do in chemical and physical changes.
What are examples of chemical reaction?
Reactions that are not chemical reactions are physical reactions. These reactions involve a change in only the physical state of an element, not its chemical properties. Thus, physical changes include freezing, condensation, sublimation, hammering a metal into a sheet, cutting sodium metal, etc.
